Exam 43: Fluid and Electrolyte Balance

Which of the following is not true of glucose?

Cells in the roof of the third ventricle of the brain affect the functioning of the thirst center.

Extracellular fluid depletion is the last line of defense against dehydration.

Match each term with its corresponding definition. -Substance that enters the body through injection and not through the alimentary canal

The subfornical organ is located in what part of the central nervous system?

Which large molecules are retained by the selectively permeable cell membrane?

Hypochloremia is frequently linked to cases of potassium loss.

If the volume of fluid and electrolyte levels inside and outside the cell remains relatively constant, a condition of homeostasis exists.

Match each term related to abnormal conditions with its corresponding definition or explanation. -Condition when fluid output exceeds fluid intake and results in a decrease in total body water

Compare the chemical compositions of plasma, interstitial fluid, and intracellular fluid.

The milliequivalent is a measure of the weight of an electrolyte.

Whereas sodium is the predominant cation in blood plasma, potassium is the predominant cation in intracellular fluid.

Both a decrease in potassium ions and a decrease in blood pressure will stimulate the release of aldosterone.

If two electrodes charged with a weak current were placed in a solution of NaCl, the positive electrode would attract:

Aldosterone and ADH both regulate body fluid by causing absorption of sodium.

The lungs are a source of water loss for the body.

Match each term related to abnormal conditions with its corresponding definition or explanation. -A serum potassium level substantially above normal

Too much potassium can be more dangerous than too little potassium.

When the sum of the blood hydrostatic pressure and the interstitial fluid colloid osmotic pressure is greater than the sum of the interstitial fluid hydrostatic pressure and the blood colloid osmotic pressure, fluid shifts out of the interstitial fluid and into the blood.

Both ADH and aldosterone cause fluid retention.